updated dependencies

package.json

@@ -7,24 +7,25 @@
   },
   "author": "Oskar Kvamme",
   "license": "ISC",
+  "dependencies": {},
   "devDependencies": {
-    "autoprefixer": "^6.3.3",
+    "autoprefixer": "^7.1.4",
     "browser-sync": "^2.16.0",
-    "del": "^2.2.0",
+    "del": "^3.0.0",
     "gulp": "^3.9.0",
     "gulp-cssnano": "^2.1.1",
     "gulp-inject-string": "^1.1.0",
-    "gulp-minify": "0.0.5",
-    "gulp-postcss": "^6.2.0",
+    "gulp-minify": "1.0.0",
+    "gulp-postcss": "^7.0.0",
     "gulp-rename": "^1.2.2",
-    "gulp-sass": "^2.1.1",
-    "gulp-sourcemaps": "^1.6.0",
-    "gulp-zip": "^3.2.0",
+    "gulp-sass": "^3.1.0",
+    "gulp-sourcemaps": "^2.6.1",
+    "gulp-zip": "^4.0.0",
     "lazypipe": "^1.0.1",
     "pageres": "^4.1.1",
     "postcss-unmq": "^1.0.2",
     "require-dir": "^0.3.0",
-    "run-sequence": "^1.1.5",
-    "webpack-stream": "^3.1.0"
+    "run-sequence": "^2.1.0",
+    "webpack-stream": "^4.0.0"
   }
 }